I honestly don't see a connection, but I came down with PMR the day after having my most recent Covid booster - this would be my 6th or 7th shot including the initial ones. I'm a 79-year-old woman in mostly good health, only reaction after shots was the mildest pain at the injection site, and not even that with the last one. On that same day I was doing a lot of physical activity, mowing, weed-wacking, shifting furniture around because a new bed was coming in, and then sleeping on an unfamiliar and overly soft mattress. Next morning, huge shoulder and upper arm pain that I assumed was from over-work... until it wouldn't go away and got worse.

Bottom line is that before Covid, I'm guessing that most of us only had annual innoculations for flu. With all the millions of Covid jabs, if vaccines brought on the condition, wouldn't there have to be one heck of a jump in the number of PMR cases?